Brief history (B747) After the introduction of the 707 in 1958, Pan Am wanted a jet two and half times its size, to reduce its seat cost by 30% to democratize air travel. Hence in 1965, Joe Sutter left the 737 development program to design the 747-the first twin-aisle airliner. The 747 is a quad jet, initially powered by JT9D turbofan engines, then GE CF6 and RR RB211 engines for theContinue reading “B747 vs a380-How Much Are They Worth in 2022?”
The SR-71 was a marvel, a super plane that marked an era. The technology it had on it is still unmatched. One of the most impressive things about the jet was its engines. Not only the sheer power of them but their placement of them. Two Pratt & Whitney J58 axial-flow turbojet engines powered theContinue reading “Why Were The SR-71 Engines’ So Far Apart From Each Other?”
Based on aerodynamics and fuel efficiency design. Nasa and Boeing are studying a concept design named Transonic Truss-Braced Wing (TTBW), belonging to the Subsonic Ultra Green Aircraft Research program. Boeing has a configuration with an outstanding aerodynamic flying within Mach 0.70 – 0.80 (Transonic), a competitive speed similar to airliners. The wing plane comprises aContinue reading “TRANSONIC TRUSS-BRACED WING”
When talking about Mach, it is pretty common to relate it with supersonic aircraft, but not always. This number of airflow velocity helps to determine the limits of the aircraft performance in terms of maximum airspeed. The critical Mach number (Mcr) is the lowest Mach number of the plane in which the speed of soundContinue reading “Critical Mach Number”
The Lockheed SR-71 “Blackbird” is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by Lockheed Martin’s Skunk Works, which has a hard-earned reputation for making the impossible happen. The SR-71 operates at extremely high speeds of about Mach 3.2 and altitudes of up to 85,000 ft (25,900 m) to allow it toContinue reading “SR-71 Blackbird: The jet that could outfly a bullet and a missile”
260 years of unsolved and unknown regime of high speed dynamics of gases were broken with the significant flight of the Bell X-1 research vehicle installed under the B-29 bomber of World War II vintage, on October 14, 1947 in the Mojave Desert in California.